Plumbing waste-pipe.



PATENTBD JULYaO, 1907.

cn., wAsHmaToN, n. c.

UNITED STATES PATENT OFFICE.

MARY KEY BELL, OF KNOXVILLE, TENNESSEE.

PLUMBING WASTE-PIPE.

Application filed June 17, 1904, Serial No. 212,982. Renewed January 23,1907.

To all whom 'it may concern:

Be it known that I, MARYKEY BELL, a citizen oi the United States,residing at Knoxville, in the county oi Knox and State oi Tennessee,have invented a new and useful Improvement in Plumbing Waste-Pipes, ofwhich the iollowing is a specification, reference being had to theaccompanying drawing.

My invention relates particularly lto waste pipes leading from washbasins and kitchen sinks.

The object of the invention is to provide a waste pipe with means forintercepting solid matter passing downward from the basin or sink and toprovide means for the convenient removal of such solid matter irom thepipe. Such solid matter may consist of mere refuse which should beintercepted to prevent the stoppage of the pipes further down, or it mayconsist oi articles of value, as small articles oi jewelry and diamondsand other valuable stones dislodged from their settings.

In the accompanying drawings, Figure 1 is a iront elevation of a portionoi a waste pipe embodying my improvement, the cap to the opening of saidpipe having been removed; Fig. 2 is a sectional side elevation lookingfrom the right as shown in Fig. 1; Fig. 3 is a horizontal section on theline, 3-3, oi Eig. 2.

In said drawings, l is the pipe. Its upper end may be joined directly tothe basin or sink in the usual manner or said end may be joined toanother section of pipe the upper end oi which is joined to the sink.

At any convenient point below the basin or sink, preferably above theS-orm water seal, 2, the intercepting device is located. This consistsoi a diaphragm, 3, having perlorations or openings, 4, suilicientlynumerous and large to permit the ready flow oi liquid Specification ofLetters Patent.

Patented July 30, 190'?.

Serial No. 353.578.

through said diaphragm and yet small enough to prevent the passage ofsolid particles of objectionable size. Said diaphragm, oi course, is oiproper size and shape to completely fill the interior oi the pipe, Thediaphragm shown in the drawings is made oi sheet metal.

Immediately above the diaphragm is located a short horizontal branchpipe, 5, through which access may be had to the space above saiddiaphragm for the purpose oi removing the solid matter lodging thereon.A suitable closing device, (i, is applied to the end oi said branch. Inthe drawings, said closing device is a circular flanged cap interiorlythreaded to conform to interior screw threads on the branch pipe. Saidclosing device may be removed as often as desired, when it is thoughtthat there is an accumulation oi refuse or when any article of value hasgone down the pipe.

It will be understood that the details o construction may be more orless varied without departing from the principle and spirit of myinvention.

I claim as my invention:

As an article of manufacture, a plumbers trap comprising a one-piecewaste pipe of S-form and substantially uniform diameter and havingr atubular, horizontal branch located a little above the seal portion ofsaid pipe, a screwthreaded cap closing said branch, and a horizontal,circular, perforated, sheet-metal diaphragm extending entirely acrossthe interior of said pipe and in the same horizontal plane with thelowest portion of said branch, substantially as described.

In testimony whereof I have signed my name, in pres ence of twoWitnesses, this third day of June, in the year one thousand nine hundredand four.

MARY KEY BELL.

Witnesses Mouais F. HAGY, EDWARD I'Lmsrmw.

